1 Reply Latest reply on Nov 3, 2020 11:50 AM by AlbertB_56

# S25FL128S - timing

Hello,

how do i determine the maximum read frequency of the S25FL128S?
I want to do a quad read and select the maximum frequency that i can use.

I see that the maximum tv (Clock Low to Output Valid) time is 6.5ns. The MCU that i use has a setting time of 1.5ns.

So the maximum frequency that i can use is 1 / (2 * (6.5ns + 1.5ns)) = 62,5MHz

Is this a correct assumption or can i use a higher frequency? If yes, whow do I determine this higher frequency? What are the limits?

Best regards,

Mathias Vanbelle

• ###### 1. Re: S25FL128S - timing

Hello Mathias,

The maximum (Quad READ) frequency in regards to the S25FL128Sxx is 104MHz, provided that VIO = VCC = 2.7V to 3.6V.

The maximum (Quad READ) frequency in regards to the S25FL128Sxx is 66MHz, provided that (VIO = 1.65V to 2.7V, VCC = 2.7V to 3.6V)

Refer to page 52, Table 27. Latency Codes for SDR Enhanced High Performance in the S25FL128Sxx datasheet:

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company